R help - Jun 2010 - Slightly OT: how to save Tinn-R files to open in linux

I use two PCs for my R programming, one Win32 and one Linux (Ubuntu 10).
In Windows I use Tinn-R to save my code and occasionally I am unable to
open a Tinn-R saved file in Ubuntu.  If I try to open in gedit I get a
message that "gedit has not been able to detect the character
encoding."
To correct this problem I have to open the file in notepad and save it
again.  Is there a setting I can change in Tinn-R (or in Ubuntu) so that
these files will play well together?  This doesn't happen all the time,
but enough to be annoying.  Thanks in advance for any advice.
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